CN108226585B - Emergency electromagnetic shielding room and testing device thereof - Google Patents
Emergency electromagnetic shielding room and testing device thereof Download PDFInfo
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- CN108226585B CN108226585B CN201711374579.8A CN201711374579A CN108226585B CN 108226585 B CN108226585 B CN 108226585B CN 201711374579 A CN201711374579 A CN 201711374579A CN 108226585 B CN108226585 B CN 108226585B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
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Abstract
The invention discloses an emergency electromagnetic shielding room which comprises a shell, a sealing cover and an insulating supporting plate, wherein the shell is of a rectangular box-shaped structure with an opening at the upper end, the sealing cover is connected with the shell and seals the opening of the shell, the insulating supporting plate is arranged in the shell and fixed on the upper end surface of a bottom plate of the shell, and the upper end surface of the insulating supporting plate is recessed downwards to form an accommodating groove. The shell and the sealing cover are formed by laminating a permalloy plate, a wave absorbing material layer and an aluminum alloy plate which are sequentially arranged from inside to outside. The invention also discloses a testing device of the emergency electromagnetic shielding room. The invention has simple and compact integral structure, small volume, convenient realization and low cost, and can generate electromagnetic shielding effect on the small electronic communication equipment when in use, thereby improving the safety of the small electronic communication equipment when in transfer.
Description
Technical Field
The invention relates to an electromagnetic shielding technology, in particular to an emergency electromagnetic shielding room and a testing device thereof.
Background
With the development and wide application of automatic control technology, communication and electronic information technology, electromagnetic pollution is more and more serious, and the problem of electromagnetic compatibility is more and more emphasized by people. At present, most of the electromagnetic compatibility problems are solved by adopting an electromagnetic shielding mode, wherein the electromagnetic shielding principle is to shield a far field region of a radiation interference source by reflecting and absorbing electromagnetic waves through an electromagnetic shielding body, namely, simultaneously shield an electric field and a magnetic field component generated by the field source so as to achieve the purpose of resisting radiation interference.
The existing electromagnetic shielding bodies are developed and designed aiming at industrial products and equipment, are manufactured by adopting a large amount of metal materials such as steel, iron and the like, have large volume and are difficult to carry and transfer. Therefore, when the small electronic communication equipment is moved and transferred, the existing electromagnetic shielding body is not suitable, but the small electronic communication equipment is transferred without the electromagnetic shielding body, and when the small electronic communication equipment is attacked by electromagnetic interference, the small electronic communication equipment is easy to damage and information is easy to leak. How to improve the security of the small electronic communication device during the transfer is a problem generally concerned by people at present, however, no corresponding device exists today, and no relevant report is found.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an emergency electromagnetic shielding room which is simple and compact in overall structure, small in size, convenient to implement and low in cost, and can generate an electromagnetic shielding effect on small electronic communication equipment during application, so that the safety of the small electronic communication equipment during transfer can be improved. The invention also discloses a testing device of the emergency electromagnetic shielding room.
The purpose of the invention is mainly realized by the following technical scheme: an emergency electromagnetic shielding room comprises a shell, a sealing cover and an insulating supporting plate, wherein the shell is of a rectangular box-shaped structure with an opening at the upper end, the sealing cover is connected with the shell and seals the opening of the shell, the insulating supporting plate is arranged in the shell and fixed on the upper end surface of a bottom plate of the shell, and the upper end surface of the insulating supporting plate is recessed downwards to form an accommodating groove;
the shell and the sealing cover are respectively formed by laminating a permalloy plate, a wave absorbing material layer and an aluminum alloy plate which are sequentially arranged from inside to outside. When the invention is applied, the small electronic communication equipment can be placed in the accommodating groove, the aluminum alloy plate is used for shielding the high-frequency electromagnetic field, the beryllium alloy plate is used for shielding the low-frequency electromagnetic field, and the wave-absorbing material layer is used for absorbing or greatly weakening the energy of the electromagnetic wave so as to enhance the shielding performance and achieve the purpose of protecting the small electronic communication equipment.
Furthermore, the top height of the left side wall plate of the shell is lower than that of the wall plates on the other three sides of the shell, and a positioning gap is formed in the area, located between the front side wall plate and the rear side wall plate of the shell, above the left side wall plate of the shell;
the inner sides of the front side wall plate, the rear side wall plate and the right side wall plate of the shell are all recessed to form a positioning guide groove with the horizontal height higher than the top of the left side wall plate of the shell, and the horizontal heights of the positioning guide grooves of the front side wall plate, the rear side wall plate and the right side wall plate of the shell are the same; the positioning guide grooves on the front side wall plate and the rear side wall plate of the shell are horizontally arranged in the transverse direction, openings at two ends of the positioning guide grooves are respectively positioned at the left end and the right end of the wall plate, and the positioning guide groove on the wall plate on the right side of the shell is horizontally arranged in the longitudinal direction and is communicated with the two positioning guide grooves horizontally arranged in the transverse direction;
the lower end face of the seal cover is connected with three positioning plates, wherein two positioning plates are horizontally arranged in the transverse direction, the other positioning plate is horizontally arranged in the longitudinal direction, and two ends of the other positioning plate are fixedly connected with the right ends of the two positioning plates which are horizontally arranged in the transverse direction respectively; the positioning plate and the positioning notch are same in height, the positioning plate protrudes outwards to form a positioning bulge which corresponds to the positioning guide groove in position and is matched with the positioning guide groove in size and shape, and the positioning bulge is embedded into the positioning guide groove;
the left end of the sealing cover protrudes downwards to form a side sealing plate with the same length as the positioning gap, the lower end of the side sealing plate is connected with a second sealing strip, and the height of the side sealing plate and the height of the second sealing strip after being overlapped are equal to the height of the positioning gap. The positioning bulge is embedded into the two positioning guide grooves which are horizontally arranged in the transverse direction, so that the sealing cover is guided and positioned. When the small electronic communication device is applied, the sealing cover can slide leftwards to open the shell, and can also slide rightwards to close the shell opening, so that the small electronic communication device is convenient to take and place. When the sealing cover closes the opening at the upper end of the shell, the positioning notch is closed by the side sealing plate and the second sealing strip, so that the sealing performance of the sealing cover can be ensured.
Further, the inboard equal indent of the front side wall board, the rear side wall board and the right side wallboard three of casing constitutes the strip of paper used for sealing constant head tank that has the level to be higher than the positioning guide groove, both ends about the equal horizontal level setting of strip of paper used for sealing constant head tank on the front side wall board of casing and the rear side wall board and both ends opening are located the wallboard respectively, the vertical level setting of strip of paper used for sealing constant head tank on the right side wallboard of casing and the strip of paper used for sealing constant head tank switch-on that sets up with two horizontal levels, the embedding has the first sealing strip with locating plate in close. According to the invention, the gap between the sealing cover and the shell is sealed by the first sealing strip, so that the purpose of enhancing the electromagnetic shielding performance can be achieved.
Furthermore, the positioning guide groove and the seal positioning groove are both formed by the permalloy plate in an inward concave manner. Therefore, the arrangement of the positioning guide groove and the seal positioning groove in the invention can not influence the shielding performance of the wave absorbing material layer and the aluminum alloy plate, and can reduce the influence of the arrangement of the positioning guide groove and the seal positioning groove on the shielding performance of the shell.
In order to improve the structural strength of the edge parts of the shell and the cover, further, the edge parts of the beryllium alloy plate and the wave-absorbing material layer in the shell are coated by folding the aluminum alloy plate of the shell; the edge parts of the permalloy plate and the wave-absorbing material layer in the sealing cover are coated by the folded aluminum alloy plate of the sealing cover.
A testing device for the emergency electromagnetic shielding room comprises a signal transmitter, a signal receiver, a liquid crystal touch screen connected with the signal transmitter, and a liquid crystal display screen connected with the signal receiver. When the invention is used for testing the shielding effectiveness of the electromagnetic shielding chamber, the signal transmitter and the liquid crystal touch screen are arranged outside the shell, the signal receiver and the liquid crystal display screen are arranged in the shell, and the test is completed by recording the transmitting frequency value and the signal receiver strength value.
In conclusion, the invention has the following beneficial effects: (1) the small electronic communication equipment is placed in the accommodating groove, electromagnetic shielding is carried out by the aluminum alloy plate, the wave-absorbing material layer and the beryllium alloy plate from outside to inside in sequence, and the safety of the small electronic communication equipment during transfer can be improved through three-layer shielding, so that the small electronic communication equipment is convenient to popularize and apply during transfer, and can be emergently used particularly in the occasions of sudden electromagnetic pollution.
(2) When the small electronic communication device is applied, the small electronic communication device can be taken and placed in a sliding opening cover mode, and the small electronic communication device is convenient and fast to take and place.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic longitudinal sectional view of an insulating support plate built into a housing according to an embodiment of the present invention;
FIG. 3 is a schematic view of a reversed structure of the positioning plate after the cover is connected to the positioning plate according to an embodiment of the present invention;
FIG. 4 is a cross-sectional side view of a closure according to an embodiment of the present invention;
FIG. 5 is a block diagram of a testing apparatus according to an embodiment of the present invention.
The names corresponding to the reference numbers in the drawings are as follows: 1. the sealing structure comprises a shell, 2, a cover, 3, side sealing plates, 4, an insulating supporting plate, 5, a permalloy plate, 6, a wave absorbing material layer, 7, an aluminum alloy plate, 8, a positioning plate, 9, positioning protrusions, 10, positioning guide grooves, 11, sealing strip positioning grooves, 12, a first sealing strip, 13 and a second sealing strip.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example (b):
as shown in fig. 1 to 4, an emergency electromagnetic shielding room comprises a housing 1, a cover 2 and an insulating support plate 4, wherein the housing 1 is formed by welding five rectangular panels, namely a bottom plate, a front side wall plate, a rear side wall plate, a left side wall plate and a right side wall plate, and the housing 1 is integrally of a rectangular box-shaped structure with an open upper end. The sealing cover 2 of the present embodiment is connected to the housing 1 and seals the opening of the housing 1, the insulating support plate 4 is disposed in the housing 1 and fixed to the upper end surface of the bottom plate of the housing 1, and the upper end surface of the insulating support plate 4 is recessed to form an accommodating groove. The insulating support plate 4 is preferably made of plastic.
In this embodiment, the shell 1 and the cover 2 are formed by laminating a permalloy plate 5, a wave-absorbing material layer 6 and an aluminum alloy plate 7, which are sequentially arranged from inside to outside, wherein the edges of the permalloy plate 5 and the wave-absorbing material layer 6 in the shell 1 are coated by folding the aluminum alloy plate 7 of the shell 1, and the edges of the permalloy plate 5 and the wave-absorbing material layer 6 in the cover 2 are coated by folding the aluminum alloy plate 7 of the cover 2.
The top height of the left side wall plate of the housing 1 of the present embodiment is lower than the top height of the wall plates on the other three sides of the housing 1, and a positioning gap is formed in the area above the left side wall plate of the housing 1 and between the front and rear side wall plates of the housing 1. In this embodiment, the inner sides of the front wall plate, the rear wall plate and the right wall plate of the housing 1 are all recessed to form a positioning guide groove 10 with a level higher than the top of the left wall plate of the housing 1, and the level of the positioning guide grooves 10 of the three are the same. The positioning guide grooves 10 on the front side wall plate and the rear side wall plate of the shell 1 are horizontally arranged, openings at two ends are respectively located at the left end and the right end of the wall plate, and the positioning guide grooves 10 on the wall plate on the right side of the shell 1 are vertically horizontally arranged and are communicated with the two positioning guide grooves 10 horizontally arranged. The lower end face of the sealing cover 2 is connected with three positioning plates 8, wherein two positioning plates 8 are horizontally arranged, the other positioning plate 8 is vertically and horizontally arranged, and two ends of the other positioning plate are fixedly connected with the right ends of the two positioning plates 8 which are horizontally arranged. The positioning plate 8 is as high as the positioning notch, the positioning plate 8 protrudes outwards to form a positioning bulge 9 which corresponds to the positioning guide groove 10 in position and is matched with the positioning guide groove in size and shape, and the positioning bulge 9 is embedded into the positioning guide groove 10. In order to guarantee the sealing performance of the sealing cover 2 when closing the housing 1, the left end of the sealing cover 2 of this embodiment protrudes downward to form a side sealing plate 3 with the same length as the positioning notch, the lower end of the side sealing plate 3 is connected with a second sealing strip 13, the material of the second sealing strip 13 preferably adopts silicon rubber, and the height of the side sealing plate 3 and the height of the second sealing strip 13 after being overlapped are equal to the height of the positioning notch. The electromagnetic wave is that the straight line is sent, after meetting the obstacle, can produce reflection and refraction, and this embodiment realizes the mounting means of unsmooth butt joint through set up location arch 9 and location guide way 10 between closing cap 2 and casing 1, increases the contact surface overlap area, can promote the electromagnetic shielding performance of gap department.
The preceding lateral wall board of casing 1 of this embodiment, back lateral wall board and the inboard equal indent of right side wallboard three constitute the strip of paper used for sealing constant head tank 11 that the level is higher than positioning guide groove 10, both ends about the equal horizontal level setting of strip of paper used for sealing constant head tank 11 on casing 1's the preceding lateral wall board and the back lateral wall board and both ends opening are located the wallboard respectively, 11 vertical levels of strip of paper used for sealing constant head tank on casing 1's the right side wallboard set up and put through with the strip of paper used for sealing constant head tank 11 of two horizontal level settings, the embedding has the first sealing strip 12 with 8 in close contact with of locating plate in the strip of paper used for sealing. In the specific arrangement of this embodiment, in order to reduce the influence of the arrangement of the positioning guide groove 10 and the seal positioning groove 11 on the shielding performance of this embodiment, both the positioning guide groove 10 and the seal positioning groove 11 of this embodiment are preferably formed by recessing the permalloy plate 5.
The present embodiment seals the gap between the housing 1 and the cover 2 by the first sealing tape 12 and the second sealing tape 13, which not only can improve the shielding effectiveness, but also can provide reliable environmental sealing.
When the embodiment is used for protecting the small electronic communication device, the sealing cover 2 is firstly moved to the left to open the shell 1, then the small electronic communication device is placed in the accommodating groove, and then the sealing cover 2 is moved to the right to close the upper end opening of the shell 1.
As shown in fig. 5, the present embodiment further includes a testing apparatus for the emergency electromagnetic shielding room, where the testing apparatus includes a signal transmitter, a signal receiver, a liquid crystal touch screen connected to the signal transmitter, and a liquid crystal display screen connected to the signal receiver. When this embodiment is used, signal transmitter and liquid crystal touch screen locate outside the casing, and signal receiver and liquid crystal display locate in the casing. According to experimental requirements, emission frequency is selected in the liquid crystal touch screen, a proper intensity display mode is selected in the liquid crystal display screen, and the shielding effectiveness of the electromagnetic shielding room is analyzed by recording the emission frequency value and the signal receiver intensity value.
The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. For those skilled in the art to which the invention pertains, other embodiments that do not depart from the gist of the invention are intended to be within the scope of the invention.
Claims (3)
1. An emergency electromagnetic shielding room is characterized by comprising a shell (1), a sealing cover (2) and an insulating support plate (4), wherein the shell (1) is of a rectangular box-shaped structure with an opening at the upper end, the sealing cover (2) is connected with the shell (1) and seals the opening of the shell (1), the insulating support plate (4) is arranged in the shell (1) and fixed on the upper end face of a bottom plate of the shell (1), and the upper end face of the insulating support plate (4) is recessed downwards to form an accommodating groove;
the shell (1) and the sealing cover (2) are formed by laminating a permalloy plate (5), a wave-absorbing material layer (6) and an aluminum alloy plate (7) which are arranged from inside to outside in sequence; the top height of the left side wall plate of the shell (1) is lower than that of the rest three side walls of the shell (1), and a positioning gap is formed in an area above the left side wall plate of the shell (1) and between the front side wall plate and the rear side wall plate of the shell (1);
the inner sides of the front side wall plate, the rear side wall plate and the right side wall plate of the shell (1) are all recessed to form a positioning guide groove (10) with the horizontal height higher than the top of the left side wall plate of the shell (1), and the horizontal heights of the positioning guide grooves (10) of the front side wall plate, the rear side wall plate and the right side wall plate are the same; the positioning guide grooves (10) on the front side wall plate and the rear side wall plate of the shell (1) are horizontally arranged in the transverse direction, openings at two ends are respectively positioned at the left end and the right end of the wall plate, and the positioning guide groove (10) on the right side wall plate of the shell (1) is horizontally arranged in the longitudinal direction and is communicated with the two positioning guide grooves (10) horizontally arranged in the transverse direction;
the lower end face of the seal cover (2) is connected with three positioning plates (8), wherein two positioning plates (8) are horizontally arranged in the transverse direction, the other positioning plate (8) is horizontally arranged in the longitudinal direction, and two ends of the other positioning plate are fixedly connected with the right ends of the two positioning plates (8) which are horizontally arranged in the transverse direction respectively; the positioning plate (8) and the positioning notch are the same in height, the positioning plate (8) protrudes outwards to form a positioning bulge (9) which corresponds to the positioning guide groove (10) in position and is matched with the positioning guide groove in size and shape, and the positioning bulge (9) is embedded into the positioning guide groove (10);
the left end of the sealing cover (2) protrudes downwards to form a side sealing plate (3) with the same length as the positioning gap, the lower end of the side sealing plate (3) is connected with a second sealing strip (13), and the height of the side sealing plate (3) and the second sealing strip (13) after being stacked is equal to the height of the positioning gap; the inner sides of a front side wall plate, a rear side wall plate and a right side wall plate of the shell (1) are all recessed inwards to form a seal positioning groove (11) with the horizontal height higher than that of the positioning guide groove (10), the seal positioning grooves (11) on the front side wall plate and the rear side wall plate of the shell (1) are horizontally arranged in the transverse direction, openings at two ends are respectively positioned at the left end and the right end of the wall plate, the seal positioning groove (11) on the right side wall plate of the shell (1) is horizontally arranged in the longitudinal direction and is communicated with the two seal positioning grooves (11) which are horizontally arranged in the transverse direction, and a first seal strip (12) which is tightly contacted with the positioning plate (8); the positioning guide groove (10) and the seal positioning groove (11) are both formed by the permalloy plate (5) in an inwards concave manner.
2. Electromagnetic shielding room according to claim 1, characterized in that the edge portions of both the permalloy plate (5) and the layer of absorbing material (6) in said shell (1) are coated by folding the aluminum alloy plate (7) of the shell (1); the edge parts of the permalloy plate (5) and the wave-absorbing material layer (6) in the sealing cover (2) are coated by the aluminum alloy plate (7) of the sealing cover (2) after being folded.
3. A testing device for an emergency electromagnetic shielding room as claimed in any one of claims 1 to 2, comprising a signal transmitter, a signal receiver, a liquid crystal touch screen connected to the signal transmitter, and a liquid crystal display screen connected to the signal receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711374579.8A CN108226585B (en) | 2017-12-19 | 2017-12-19 | Emergency electromagnetic shielding room and testing device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711374579.8A CN108226585B (en) | 2017-12-19 | 2017-12-19 | Emergency electromagnetic shielding room and testing device thereof |
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| Publication Number | Publication Date |
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| CN108226585A CN108226585A (en) | 2018-06-29 |
| CN108226585B true CN108226585B (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711374579.8A Active CN108226585B (en) | 2017-12-19 | 2017-12-19 | Emergency electromagnetic shielding room and testing device thereof |
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| CN (1) | CN108226585B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872720B (en) * | 2018-09-04 | 2023-10-13 | 广州市诚臻电子科技有限公司 | Shielding room of extraction-insertion type replacement testing system |
| CN109239470B (en) * | 2018-09-04 | 2023-06-23 | 广州市诚臻电子科技有限公司 | Shielding room of extraction-insertion type replacement testing system |
| CN109035988B (en) * | 2018-10-05 | 2023-05-19 | 华北理工大学 | Isolation box for wireless communication professional teaching experiment |
| CN111665376A (en) * | 2019-03-07 | 2020-09-15 | 湖南省海狮电器有限公司 | Anti-interference shielding case for monitoring power transmission line |
| CN111669926B (en) * | 2020-05-22 | 2021-09-17 | 台达电子企业管理（上海）有限公司 | Electromagnetic field transmitting and receiving device and wireless charging device |
| CN114521102B (en) * | 2022-02-24 | 2023-06-06 | 南京方德电子科技有限公司 | Electromagnetic compatibility shielding shell and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104244687A (en) * | 2014-09-23 | 2014-12-24 | 中国科学院电子学研究所 | Electromagnetic shielding room |
| CN206710660U (en) * | 2017-04-10 | 2017-12-05 | 皖西学院 | A kind of communication engineering optical fiber commuting case |
-
2017
- 2017-12-19 CN CN201711374579.8A patent/CN108226585B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104244687A (en) * | 2014-09-23 | 2014-12-24 | 中国科学院电子学研究所 | Electromagnetic shielding room |
| CN206710660U (en) * | 2017-04-10 | 2017-12-05 | 皖西学院 | A kind of communication engineering optical fiber commuting case |
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| CN108226585A (en) | 2018-06-29 |
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Denomination of invention: An emergency electromagnetic shielding room and its testing device Effective date of registration: 20210628 Granted publication date: 20200915 Pledgee: Mianyang Branch of Sichuan Tianfu Bank Co.,Ltd. Pledgor: MIANYANG HENGCHI METAL EQUIPMENT Co.,Ltd. Registration number: Y2021510000123 |
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